Your Paper Size Reference & Comparison
Look up the exact dimensions of every standard paper size (A0-A10, B0-B10, US Letter, Legal, Tabloid) in millimeters, inches and pixels at any DPI.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
A4 = 210 x 297mm = 8.27 x 11.69in = 2480 x 3508px at 300 DPI — the standard size and resolution used for a print-ready flyer or document.Open the Paper Size Reference & Comparison
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What is the Paper Size Reference & Comparison?
Every standard paper size — the ISO A-series (A0 down to A10), the less common B-series, and the US Letter, Legal and Tabloid sizes — has an exact, fixed dimension in millimeters, and this tool lists them all. Pick a DPI (72 for screen, 96 for Windows-standard screen, 150 for draft print, 300 for high-quality print) and every size is also shown converted into inches and exact pixel dimensions at that resolution, which is exactly what you need when setting up a document, a print template or a design canvas.
A scaled visual comparison shows the sizes as proportional boxes side by side, so you can see at a glance how much bigger an A3 is than an A4 (exactly double, by design — that's the defining property of the A-series), or how US Letter compares to A4 (Letter is slightly shorter and wider).
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Full A0-A10, B0-B10, Letter, Legal and Tabloid dimensions.
See all three units at once, no separate lookup needed.
72, 96, 150, 300 or a custom value for exact pixel dimensions.
See relative sizes as scaled boxes, not just numbers.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
Designers setting up a print document
Get the exact pixel canvas size for a target paper size and print DPI.
Try it freeDevelopers building a PDF or print feature
Look up precise dimensions instead of guessing or hunting through old notes.
Try it freeAnyone comparing US and international paper
See exactly how Letter differs from A4 side by side.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This utility | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
What size in pixels is A4 at 300 DPI?
2480 x 3508 pixels — the standard resolution for a high-quality printable A4 document.
What's the difference between A4 and US Letter?
A4 is 210 x 297mm; US Letter is 215.9 x 279.4mm (8.5 x 11in) — Letter is slightly wider and shorter than A4, a small but real difference that can affect margins when printing across regions.
Why does the A-series scale so neatly?
Each size is defined as exactly half the area of the previous one along the long edge, so A4 folded in half is A5, and two A4 sheets equal one A3 — a deliberate, elegant property of the ISO 216 standard.
What DPI should I use for print versus screen?
300 DPI for high-quality print, 150 DPI for acceptable draft print, and 72-96 DPI only for on-screen display — never for something you intend to print.
Is this free?
Yes, unlimited lookups, no signup.
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Look up exact A-series, B-series, Letter and Legal paper dimensions in mm, inches and. Free to use.
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